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公开(公告)号：US20210140828A1
公开(公告)日：2021-05-13
申请号：US17150759
申请日：2021-01-15
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin
Abstract: An ambient light color sensing device adapted to determine color of ambient light and method for calibrating thereof. The ambient light color sensing device comprises a memory, a processor, and a light color sensor having a plurality of channels that detect light at different wavelengths to produce sensor readings. Wherein the processor receives sensor readings from the light color sensor, determines an interpolated spectral power distribution from the received sensor readings, converts the interpolated spectral power distribution to at least one measured light color value that quantifies color of light, and determines at least one calibrated light color value by correlating the at least one measured light color value through a calibration matrix.
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公开(公告)号：US20190342974A1
公开(公告)日：2019-11-07
申请号：US16402956
申请日：2019-05-03
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin , Agnieszka Libson , Benjamin Slivka
Abstract: A color temperature sensor assembly comprising a sensor body, a substantially dome shaped diffuser extending through an opening in the sensor body, a substantially flat diffuser disposed within the sensor body below the first diffuser, and a color temperature sensing module disposed below the flat diffuser and adapted to detect a color temperature of light collected by the dome shaped diffuser and the flat diffuser. The shape of the dome diffuser helps capture light from all angles to bring in more light to the sensor and provide more accurate readings. The secondary flat diffuser is adapted to further diffuse the light to reduce light concentration and prevent inaccurate readings. The color temperature readings from the color temperature sensor assembly may be used to control at least one lighting load.
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Patent Agency Ranking
公开(公告)号：US11378456B2
公开(公告)日：2022-07-05
申请号：US17150804
申请日：2021-01-15
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin
Abstract: A method and an ambient light color sensor adapted to determine color of ambient light comprising a memory, a processor, and a light color sensor with a plurality of channels that detect light at different wavelengths. Wherein the memory comprises a calibration matrix determined by calibrating a test light color sensing device under at least one ambient lighting condition, and a normalized gain value for each channel determined by calibrating the ambient light color sensing device to an artificial light source. Wherein the processor receives the sensor readings from the light color sensor, normalizes each received sensor reading using the normalized gain value of a respective channel, determines at least one measured light color value that quantifies color of light from the normalized sensor readings, and determines at least one calibrated light color value by correlating the at least one measured light color value through the calibration matrix.
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公开(公告)号：US10750597B2
公开(公告)日：2020-08-18
申请号：US16402956
申请日：2019-05-03
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin , Agnieszka Libson , Benjamin Slivka
Abstract: A color temperature sensor assembly comprising a sensor body, a substantially dome shaped diffuser extending through an opening in the sensor body, a substantially flat diffuser disposed within the sensor body below the first diffuser, and a color temperature sensing module disposed below the flat diffuser and adapted to detect a color temperature of light collected by the dome shaped diffuser and the flat diffuser. The shape of the dome diffuser helps capture light from all angles to bring in more light to the sensor and provide more accurate readings. The secondary flat diffuser is adapted to further diffuse the light to reduce light concentration and prevent inaccurate readings. The color temperature readings from the color temperature sensor assembly may be used to control at least one lighting load.
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公开(公告)号：US11287324B2
公开(公告)日：2022-03-29
申请号：US17150759
申请日：2021-01-15
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin
Abstract: An ambient light color sensing device adapted to determine color of ambient light and method for calibrating thereof. The ambient light color sensing device comprises a memory, a processor, and a light color sensor having a plurality of channels that detect light at different wavelengths to produce sensor readings. Wherein the processor receives sensor readings from the light color sensor, determines an interpolated spectral power distribution from the received sensor readings, converts the interpolated spectral power distribution to at least one measured light color value that quantifies color of light, and determines at least one calibrated light color value by correlating the at least one measured light color value through a calibration matrix.
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公开(公告)号：US20210140829A1
公开(公告)日：2021-05-13
申请号：US17150804
申请日：2021-01-15
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin
Abstract: A method and an ambient light color sensor adapted to determine color of ambient light comprising a memory, a processor, and a light color sensor with a plurality of channels that detect light at different wavelengths. Wherein the memory comprises a calibration matrix determined by calibrating a test light color sensing device under at least one ambient lighting condition, and a normalized gain value for each channel determined by calibrating the ambient light color sensing device to an artificial light source. Wherein the processor receives the sensor readings from the light color sensor, normalizes each received sensor reading using the normalized gain value of a respective channel, determines at least one measured light color value that quantifies color of light from the normalized sensor readings, and determines at least one calibrated light color value by correlating the at least one measured light color value through the calibration matrix.
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公开(公告)号：US11002605B2
公开(公告)日：2021-05-11
申请号：US16704515
申请日：2019-12-05
Applicant: Crestron Electronics, Inc.
Inventor： Dennis Hromin
Abstract: An ambient light color sensor adapted to determine color of ambient light and method for calibrating thereof. The ambient light color sensor comprises a sensor body having at least one diffuser and a light color sensing module disposed below the at least one diffuser. The light color sensing module comprises a plurality of channels adapted to detect light collected by the at least one diffuser at different wavelengths to produce sensor readings. The ambient color sensor is adapted to measure color of ambient light by storing a calibration matrix determined by calibrating a test light color sensor to a test ambient light source, receive the sensor readings from the light color sensing module, determine an interpolated spectral power distribution from the received sensor readings, convert the interpolated spectral power distribution to at least one measured light color value that quantifies color of light, and determine at least one calibrated light color value by correlating the at least one measured light color value through the calibration matrix. The sensor readings received from the ambient light color sensor and test sensor readings received from the test light color sensor during calibration thereof may be normalized by calibrating the ambient light color sensor and the test light color sensor to an artificial light source.
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